TGS Triglycine Sulfate, DTGS Deuterated Triglycine Sulfate

Water-soluble Triglycine Sulfate crystals have technological importance for room-temperature IR detectors, earth exploration, radiation monitoring and astronomical telescopes. TGS is the best material used as a sensitive element in pyroelectric sensors due to its high pyroelectric coefficient, reasonably low dielectric constant, and the best quality factor. Pyroelectric sensors based on TGS are uniformly sensitive to radiation in wavelength range from UV to far IR and do need in cryogen cooling for operation.

Using of deuterated DTGS crystals allows to extend the temperature range of sensing due to their higher Curie temperature.

PROPERTIES of TGS and DTGS

Units and testing conditions

TGS

DTGS

Formula

(NH2CH2OOH)3H2SO4

(ND2CD2OOD)3D2SO4

Crystal structure

P21

P21

Density

g/cm3

1.66

1.7

Curie temperature Tc

oC

49

57-62*

Dielectric constant e

1kHz, Ebias=5kV/cm, 25oC

30-35

18-25

Dielectric loss tangent Tgd

1kHz, Ebias=5kV/cm, 25oC

0.02-0.001

0.03-0.001

Pyroelectric constant g

C cm-2K-1x108

3.3-4

2.5-3

*Depends on deuteration level

STANDARD SPECIFICATIONS

Dimensions*, mm

Cleavage Plane

TGS

5x5x1; 10x10x1; 25x25x1

(010)

DTGS

5x5x1; 10x10x1; 25x25x1

(010)

* On special request up to 120x120mm for TGS and up to 100x100mm for DTGS